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首页> 外文期刊>Applied optics >Nanometer level characterization of the James Webb Space Telescope optomechanical systems using high-speed interferometry
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Nanometer level characterization of the James Webb Space Telescope optomechanical systems using high-speed interferometry

机译：使用高速干涉仪的詹姆斯·韦伯太空望远镜光机械系统的纳米级表征

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The James Webb Space Telescope (JWST) Optical Telescope Element is a three mirror anastigmat consisting of a 6.5 m segmented primary mirror (PM), a secondary mirror, and a tertiary mirror. The primary mirror comprises 18 individual hexagonal segments. The telescope and instruments will be assembled at Goddard Space Flight Center (GSFC) to build the Optical Telescope Element-Integrated Science Instrument Module (OTIS). While at GSFC, the OTIS will go through a series of environmental tests. In these tests the OTIS will be exposed to launch level acoustics and vibrations. To assure that OTIS's performance has not changed due to these environmental tests, the assembly will be tested optically at the center of curvature of the PM. A high-speed interferometer has been designed and built to characterize both static and dynamic changes due to environmental exposure. This paper describes the details of these measurement techniques. To validate and develop the techniques that will be used on OTIS assembly two spare JWST PM segments were measured and the results presented here. (C) 2015 Optical Society of America
机译：詹姆士·韦伯太空望远镜（JWST）光学望远镜元件是三镜反像，由6.5 m分段主镜（PM），副镜和三镜组成。主镜包括18个单独的六角形部分。望远镜和仪器将在戈达德太空飞行中心（GSFC）组装，以构建光学望远镜元件集成科学仪器模块（OTIS）。在GSFC期间，OTIS将经历一系列环境测试。在这些测试中，OTIS将受到发射声和振动的影响。为了确保OTIS的性能不会因这些环境测试而改变，将在PM的曲率中心对组件进行光学测试。设计并制造了一种高速干涉仪，用于表征由于暴露于环境而产生的静态和动态变化。本文介绍了这些测量技术的详细信息。为了验证和开发将在OTIS组件上使用的技术，测量了两个备用JWST PM段，并在此处显示结果。 （C）2015年美国眼镜学会

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